Determination of Major Components in Silicate Phase of Sulphide Ores by ICP-AES with Lithium Metaborate Fusion Sample Pretreatment

Sulphide ores can′t be completely decomposed by LiBO2 flux, but petrogenetic elements existed in oxide form was decompounded completely. Therefore, a method for the determination of major components in silicate phase of sulphide ores, including SiO2, Al2O3, CaO, MgO, K2O, Na2O, TiO2, MnO and P2O5 by inductively coupled plasmaatomic emission spectrometry (ICPAES) with lithium metaborate fusion sample pretreatment was proposed. The sample dissolution parameters and ICPAES instrument operating condition were studied and optimized. The accuracy and precision of the method were tested by analyzing different National Standard Reference Materials. The results were in good agreement with the certified values with accuracy of RE<5％ and precision of <7％RSD. The recovery of these components in sulphide ores was 90％~110％. The method has been successfully used in routine analysis of sulphide ores.